Flat optics, which is realized by the artificially created two-dimensional material platform called optical metasurfaces, is currently undergoing a science-to-technology transition. A representative example includes a flat and ultra-compact metalens, which has huge potential for replacing conventional bulky and heavy optical lens. However, ‘real-time’ active operations of those flat optical devices have remained unresolved yet. To resolve such a grand challenge, we propose two approaches to realize dynamic metaphotonic devices using multiple light properties and tunable materials. We believe such dynamic metaphotonic devices will further accelerate real-life applications such as video holographic-displays, full-color high resolution displays, focus-tunable metalenses and LiDARs.
Dr. Junsuk Rho received his B.S. degree from Seoul National University in 2007, M.S. degree from the University of Illinois Urbana-Champaign in 2008, and Ph.D. degree from the University of California, Berkeley in 2013. He was the Ugo Fano fellow in Nanoscience and Technology Division at Argonne National Laboratory, USA. Since 2014, he has been an Assistant Professor, Associate Professor, Mu-Eun-Jae Endowed Chair Professor and Young Distinguished Professor at Pohang University of Science and Technology (POSTECH), Korea. His research includes metamaterials, plasmonics, nanophotonics and nanofabrication. Dr. Rho is a recipient of the Korean Presidential Early Career Award in 2019 and MEE/MNE Young Investigator Award and Lectureship in 2020. He currently serves as Associate Editors of Light: Science and Applications (Springer-Nature) and Micro and Nano Engineering (Elsevier).